Solar reflecting and condensing device using thin film

A solar reflecting and condensing device using a thin film includes a condensing film (2), a bottom plate (3) for surface forming and a focus fixing bracket (4) for surface forming. The condensing film (2) is a planar film with a reflecting cladding or a total reflection condensing film of micro-prisms, and is arranged on the top surface of the bottom plate (3). The bottom plate (3) is a thin plate, which is adhered to the top surface of the focus fixing bracket (4), and forms a surface shape and a precisely positioned focus, meeting optical requirements, together with the focus fixing bracket (4).